Finding and displaying locations in iPhone?

I have the list of latitudes and longitudes开发者_开发百科.

I want to have a Map View that shows me the nearest one of these locations within a 10 mile radius and show them all to me.

How would I go about doing that?

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Lots of mapkit tutorials out there on the web, such as http://mithin.in/2009/06/22/using-iphone-sdk-mapkit-framework-a-tutorial. Have you looked at these?